<template>
  <section class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">硅谷外卖</h2>
        <div class="login_header_title">
          <a href="javascript:;" :class="{on : showWay}" @click="showWay = true">短信登录</a>
          <a href="javascript:;" :class="{on : !showWay}" @click="showWay = false">密码登录</a>
        </div>
      </div>
      <div class="login_content">
        <form @submit.prevent="login">
          <div :class="{on : showWay}">
            <section class="login_message">
              <input type="tel" maxlength="11" placeholder="手机号" v-model="phone">
              <button :disabled="!phoneRight" class="get_verification"
                      :class="{ phone_right: phoneRight}"
                      @click.prevent="countClick" >
                {{countTime >0 ?`已发送(${countTime})秒`:'获取验证码'}}
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="8" placeholder="验证码" v-model="code">
            </section>
            <section class="login_hint">
              温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <div :class="{on : !showWay}">
            <section>
              <section class="login_message">
                <input type="tel" maxlength="11" placeholder="手机/邮箱/用户名" v-model="name">
              </section>
              <section class="login_verification">
                <input type="password" maxlength="8" placeholder="密码" v-show="!showPwd" v-model="pwd">
                <input type="text" maxlength="8" placeholder="密码" v-show="showPwd"  v-model="pwd">
                <div class="switch_button" :class="{on : showPwd,off : !showPwd}" @click="showPwd=!showPwd">
                  <div class="switch_circle" :class="{right: showPwd}"></div>
                  <span class="switch_text">{{showPwd?'abc':'...'}}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="capatch">
                <img class="get_verification" src="http://localhost:4000/captcha" alt="capatch" @click="getCapatchCode">
              </section>
            </section>
          </div>
          <button class="login_submit">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back" @click="$router.back()">
        <i class="iconfont icon-jiantou2"></i>
      </a>
    </div>
    <!-- 弹框 -->
    <alert-tip v-if="showAlert"
               @closeTip="closeTip"
               :alertText="alertText"/>
  </section>
</template>

<script>
// import {mapActions} from 'vuex'
// 引入 获得用户信息、发送短信验证码、使用短信验证码登陆、使用用户名和密码登陆
import {reqUserInfo, reqSendCode, reqSmsLogin, reqPwdLogin} from '../../api'
import AlertTip from '../../components/AlertTip/AlertTip.vue'
export default {
  name: 'Login',
  components: {
    AlertTip
  },
  data () {
    return {
      showWay: true, // 登录方式标志位
      countTime: 0, // 倒计时计数器
      showPwd: false, // 是否显示密码
      phone: '', // 手机号
      code: '', // 短信验证码
      pwd: '', // 密码
      capatch: '', // 图形验证码
      name: '', // 用户名
      showAlert: false, // 显示提示组件
      alertText: null, // 提示的内容
      userInfo: {}
    }
  },
  computed: {
    phoneRight () {
      return /^1\d{10}$/.test(this.phone)
    }
  },
  methods: {
    // 使用vuex的更新方法
    // ...mapActions(['reqUserInfo']),
    // 点击获取验证码计时器
    async countClick () {
      console.log(this.countTime)
      if (this.countTime === 0) { // 表示未计时
        this.countTime = 30
        let countId = setInterval(() => {
          this.countTime--
          if (this.countTime === 0) {
            clearInterval(countId)
          }
        }, 1000)
        // 发送ajax请求、发送短信验证码
        let result = await reqSendCode(this.phone)
        if (result.code === 1) { // 短信验证码发送失败
          // 提示信息
          this.openAlert(result.msg)
          // 清除计数器
          clearInterval(countId)
        }
      }
    },
    // 登录
    async login () {
      // 如果是手机短信登陆
      if (this.showWay) {
        if (!this.phone) {
          this.openAlert('手机号码不正确')
          return 0
        } else if (!(/^\d{6}$/gi.test(this.code))) {
          this.openAlert('短信验证码不正确')
          return 0
        }

        // 手机号短信登录
        const result = await reqSmsLogin(this.phone, this.code)
        if (result.code === 0) { // 登陆成功
          this.userInfo = result.data
        } else {
          this.userInfo = {
            msg: '登陆失败, 手机号或验证不正确'
          }
        }
      } else { // 如果是用户名和密码登陆
        if (!this.name) {
          this.openAlert('请输入手机号/邮箱/用户名')
          return 0
        } else if (!this.pwd) {
          this.openAlert('请输入密码')
          return 0
        } else if (!this.capatch) {
          this.openAlert('请输入验证码')
          return 0
        }
        // 用户名登录
        console.log('开始登陆...' + this.name + ',' + this.pwd + ',' + this.capatch)
        const result = await reqPwdLogin({ name: this.name, pwd: this.pwd, capatch: this.capatch })
        if (result.code === 0) {
          // this.userInfo = result.data
          let info = await reqUserInfo()
          this.userInfo = info.data
        } else {
          this.userInfo = {
            msg: result.msg
          }
        }
      }
      // 登陆成功后：如果返回的值不正确，则弹出提示框，返回的值正确则返回上一页
      if (!this.userInfo._id) {
        this.openAlert(this.userInfo.msg)
        if (!this.showWay) {
          this.getCaptchaCode() // 刷新图形验证码
        }
      } else {
        // 记录用户信息到vuex
        // 使用 ...mapActions['recordUser'] 的方式
        // this.recordUserInfo(this.userInfo)
        // 使用传统的 vuex 的 action 的方法
        this.$store.dispatch('recordUser', this.userInfo)
        // 去个人中心的页面
        this.$router.replace('/profile')
        // this.$router.back()
      }
    },
    // 关闭提示框
    closeTip () {
      this.showAlert = false
      this.alertText = ''
    },
    // 打开弹窗提示信息
    openAlert (msg) {
      this.showAlert = true
      this.alertText = msg
    },
    // 点击图片验证码刷新
    getCapatchCode (event) {
      event.target.src = 'http://localhost:4000/captcha?time=' + Date.now()
    }

  }
}
</script>

<style lang="stylus" ref="stylesheet/stylus">
  //引入外部的stylus样式
  @import "../../common/stylus/mixins.styl"
  .loginContainer
    width 100%
    height 100%
    background #fff
    .loginInner
      padding-top 60px
      width 80%
      margin 0 auto
      .login_header
        .login_logo
          font-size 40px
          font-weight bold
          color #02a774
          text-align center
        .login_header_title
          padding-top 40px
          text-align center
          >a
            color #333
            font-size 14px
            padding-bottom 4px
            &:first-child
              margin-right 40px
            &.on
              color #02a774
              font-weight 700
              border-bottom 2px solid #02a774
      .login_content
        >form
          >div
            display none
            &.on
              display block
            input
              width 100%
              height 100%
              padding-left 10px
              box-sizing border-box
              border 1px solid #ddd
              border-radius 4px
              outline 0
              font 400 14px Arial
              &:focus
                border 1px solid #02a774
            .login_message
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff
              .get_verification
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)
                border 0
                color #ccc
                font-size 14px
                background transparent
                &.phone_right
                  color black
            .login_verification
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff
              .switch_button
                font-size 12px
                border 1px solid #ddd
                border-radius 8px
                transition background-color .3s,border-color .3s
                padding 0 6px
                width 30px
                height 16px
                line-height 16px
                color #fff
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)
                &.off
                  background #fff
                  .switch_text
                    float right
                    color #ddd
                &.on
                  background #02a774
                >.switch_circle
                  //transform translateX(27px)
                  position absolute
                  top -1px
                  left -1px
                  width 16px
                  height 16px
                  border 1px solid #ddd
                  border-radius 50%
                  background #fff
                  box-shadow 0 2px 4px 0 rgba(0,0,0,.1)
                  transition transform .3s
                  &.right
                    transform translateX(30px)
            .login_hint
              margin-top 12px
              color #999
              font-size 14px
              line-height 20px
              >a
                color #02a774
          .login_submit
            display block
            width 100%
            height 42px
            margin-top 30px
            border-radius 4px
            background #4cd96f
            color #fff
            text-align center
            font-size 16px
            line-height 42px
            border 0
        .about_us
          display block
          font-size 12px
          margin-top 20px
          text-align center
          color #999
      .go_back
        position absolute
        top 5px
        left 5px
        width 30px
        height 30px
        >.iconfont
          font-size 20px
          color #999
</style>
